I started keeping snakes when I was 10 (but I'd been asking for one since I was 3 lol), and started keeping fish "seriously" at 12. I've always had fish, so I'll just say I started at the same time. What got me taking care of my own tanks was a 7th grade biosphere project. It all escalated from 2 white cloud minnows that survived 9 weeks in a jar. Soon I was breeding cichlids, growing plants, and eventually I fell in love with saltwater. I currently have three saltwater tanks and four snakes. Two of my three tanks are single specimen moray eel tanks, and then there's a 155g planted semi-aggressive community. With the eels and the snakes, the interests overlap very much there. I think they are all very beautiful and endlessly interesting, plus they don't shed all over the house.